Newsletter Archive

Below is a selection of articles extracted from previous issues of the CARC newsletter. We hope you will find them both informative and useful. All material is the copyright of the respective authors. Reproduction in any form is strictly forbidden without the consent of the author.

How Short Is Short?
Coax Connections At VHF/UHF - G3GRO

23 cms ATV SWR/POWER Meter - G3KAU

The surface wave transmission line - By G3YSX

A Quantative Comparison Of Two HF Antennas
By Mike G0VYN, Lech G3KAU, and Derek G3GRO

Receiver Bandpass Checking
The use of a noise generator to directly check the filter characteristics of a receiver - by Stewart G3YSX

Fun and Games with the G3LZH Miniature Loop Antenna Peter G4FYY QRP DX With a little bit of bent wire. Could this possibly be true, or was it ‘Black Magic’? Read and believe!!

Antenna Jottings by G3JKF
Not to be defeated by the ‘plague’ of the Local Council Planners, Ken set to, and has developed a very powerful, effective and novel alternative antenna system in his attic.

A Stripline 250mW RF Output Driver Amplifier For 23cm Microwave ATV
From Derek G3GRO

OSCAR 40
An excellent primer on communication through the latest amateur satellite to take to the skies - by Jerry G0FPI

Optimisation Of The “Double - 8” Antenna Design For 23cms
Derek G3GRO

24cm ATV Walk - About Hat Aerial
A novel approach from John G8MNY

A Simple Antenna Analyser
Ridiculously simple actually, from G3KAU

A stereo filter by G4BWE
which produces, from the speaker jack socket, a quasi-stereo output from a mono input signal

Use of Telephone Tone Pad in Two-tone Testing
An ingenious and elegant alternative to the time honored method of shouting "wharlo" into the microphone to tune up an SSB transceiver.

Modifying the Z Match ATU for Top Band
A neat solution to save the need for a separate 160m ATU and all the switching and unplugging that this entails.

Modifications to a Philips broadcast receiver
For use on top band using an old type Philips push button car radio!

Methods Of Interference Suppression - Evaluation Of Receiving Loops Etc. And The MFJ 1025 Signal Canceller
Derek Atter  G3GRO

LF at G3KAU
Some of  the problems and solutions encoumtered in getting up and running on 73/163 kHz with illustrations.

A Simple Signal Canceller For 136Khz To Combat Loran or Other Noise Sources The poor man’s MFJ 1025 Signal Canceller Unit by Derek Atter G3GRO

A Box Too Far
Brian G3GDU and Derek G3GRO reproduce a navigational system used by the Luftwaffe in the early 1940s to bomb the United Kingdom, using nothing more than equipment from the shack.

Approach and Landing
The fascinating history of the development of aircraft landing systems from the very beginning to the present day by Brian Kendal G3GDU

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